JP2019135333A - Collection device, collection method and fiber raw material regenerator - Google Patents

Abstract

To improve an effect of cleaning a filter by high-pressure air flow.SOLUTION: A first dust collection part 27 comprises a housing into which air flow including a collection object flows, a filter part 240 that has a filter 305 for collecting a collection object and that is provided with an opening 305b for making the air flow passing through the filter 305 flow out, and an injection part having a nozzle part with an injection port from which gas is injected and moving the nozzle part to a position abutting on the opening. The first dust collection part injects gas from the injection port in a state of the nozzle part's abutting on the opening 305b.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a collection device, a collection method, and a fiber raw material regeneration device.

  2. Description of the Related Art Conventionally, an apparatus for backwashing powder or the like with a filter is known (for example, see Patent Document 1). Patent Document 1 describes a configuration in which air containing powder flows into a casing and the air that has passed through the filter element is exhausted through a room provided for each filter element. In this configuration, the filter element is cleaned by applying a reverse backwash pulse from the room toward the filter element.

JP 2014-79690 A

When the airflow for backwashing the filter flows into the space facing the filter as in the configuration described in Patent Document 1, the pressure is dispersed by the airflow flowing into the space. The air pressure is relaxed in space. For this reason, even when high-pressure air is used, the effect of cleaning the filter is limited.
The present invention has been made in view of the above-described circumstances, and an object thereof is to enhance the effect of cleaning a filter with a high-pressure airflow.

In order to solve the above problems, the collection device of the present invention has a housing into which an airflow including a collection target flows and a filter that collects the collection target, and the airflow that has passed through the filter. A nozzle part provided with a filter part provided with an opening for flowing out, and a nozzle part provided with an injection port for injecting gas, and an injection part for moving the nozzle part to a position in contact with the opening; The gas is injected from the injection port in a state where the portion is in contact with the opening.
According to the present invention, the nozzle is brought into contact with the opening of the filter and the gas is injected, so that most of the injected gas is passed through the filter, and the collection target attached to the filter is dropped by the injection of the gas. Can be made. For this reason, the filter can be effectively cleaned by the airflow.

  Further, the present invention may be configured such that the nozzle portion includes a closing portion that contacts the opening and closes the opening when the nozzle portion moves to the opening.

  Further, the present invention has a configuration in which the ejection unit has an air chamber capable of injecting gas, and is extended by the pressure of the gas injected into the air chamber to move the nozzle portion toward the opening. There may be.

  Further, the present invention may be configured such that the gas injected into the injection unit is injected from the injection port in a state where the nozzle unit is in contact with the opening.

  Further, the present invention may be configured such that the ejection unit and the nozzle unit are connected, and the ejection port communicates with the air chamber.

  Further, according to the present invention, when the air pressure in the air chamber reaches the first pressure, the injection portion extends to move the nozzle portion, and the nozzle portion causes the air pressure in the air chamber to reach the second pressure. When it reaches, it has a valve mechanism which moves gas from the air chamber to the injection port, and the second pressure may be higher than the first pressure.

  Further, according to the present invention, the injection unit includes an expansion / contraction member provided integrally with the base portion of the nozzle portion or connected to the base portion, and the expansion / contraction member has an air pressure in the air chamber of the first pressure. The nozzle portion has the valve mechanism that maintains a closed state by the elasticity of a spring member, and the spring when the atmospheric pressure in the air chamber reaches the second pressure. The member may be deformed and gas may be ejected from the ejection port.

  The present invention further includes a plurality of the filters in the housing, a plurality of the ejection units corresponding to the filters, and a gas supply device that supplies a gas to each of the plurality of the ejection units. A configuration may be adopted in which a predetermined number of the plurality of injection units are sequentially selected and gas is supplied from the gas supply device.

Moreover, in order to solve the said subject, the collection method of this invention has the housing | casing into which the airflow containing a collection target object flows, and the filter which collects the said collection target object, It passed the said filter. A collection method using a collection device comprising: a filter portion provided with an opening through which an airflow is flowed out; and a nozzle portion formed with an injection port for injecting gas, wherein the nozzle portion is brought into contact with the opening The nozzle is moved to a position, and gas is ejected from the nozzle in a state where the nozzle is in contact with the opening.
According to the present invention, the nozzle is brought into contact with the opening of the filter and the gas is injected, so that most of the injected gas is passed through the filter, and the collection target attached to the filter is dropped by the injection of the gas. Can be made. For this reason, the filter can be effectively cleaned by the airflow.

In order to solve the above problems, the fiber raw material recycling apparatus of the present invention includes a defibrating unit for defibrating a raw material containing fibers and a defibrated material defibrated by the defibrating unit. A separation unit that separates a single separated product into a second separated product that includes a component smaller than the fiber, a manufacturing unit that manufactures a recycled product using the first separated product separated in the separating unit, and the separation unit. A collecting unit that collects the separated second separated product, and the collecting unit collects the second separated product and a housing into which an airflow including the second separated product flows. A position having a filter, a filter part provided with an opening for flowing out the airflow that has passed through the filter, and a nozzle part in which an injection port for injecting gas is formed, and the nozzle part is in contact with the opening A state in which the nozzle portion is in contact with the opening. Injecting a gas from the injection port.
ADVANTAGE OF THE INVENTION According to this invention, in the apparatus which disentangles the raw material containing a fiber and collects the isolate | separated material isolate | separated from the defibrated material with a filter, the isolate | separated material adhering to the filter can be dropped by jetting gas. For this reason, the filter can be effectively cleaned by the airflow.

The schematic diagram which shows the structure of a sheet manufacturing apparatus. The figure which shows schematic structure of a 1st dust collection part. Sectional drawing which shows the internal structure of a 1st dust collection part. The principal part sectional view showing the composition of the injection part of a 1st embodiment. The principal part sectional view showing the composition of the injection part of a 2nd embodiment. The principal part sectional view showing the composition of the injection part of a 3rd embodiment. The principal part sectional view showing the composition of the injection part of a 4th embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, embodiment described below does not limit the content of this invention described in the claim. In addition, not all of the configurations described below are essential constituent requirements of the present invention.

[1. First Embodiment]
[1-1. Overall configuration of sheet manufacturing apparatus]
FIG. 1 is a schematic diagram illustrating the configuration of the sheet manufacturing apparatus 100.
The sheet manufacturing apparatus 100 corresponds to the fiber raw material recycling apparatus of the present invention, and executes a regeneration process in which the raw material MA containing fibers is converted into a new sheet S. The sheet manufacturing apparatus 100 can manufacture a plurality of types of sheets S. For example, by adding an additive to the raw material MA, the sheet S can be adjusted in terms of binding strength and whiteness, color, Functions such as aroma and flame retardancy can also be added. The sheet manufacturing apparatus 100 can adjust the density, thickness, size, and shape of the sheet S. As typical examples of the sheet S, in addition to sheet-like products such as A4 and A3 standard size printing paper, cleaning sheets such as floor cleaning sheets, oil stain sheets and toilet cleaning sheets, paper plates Examples include shape.

  The sheet manufacturing apparatus 100 includes a supply unit 10, a crushing unit 12, a defibrating unit 20, a sorting unit 40, a first web forming unit 45, a rotating body 49, a mixing unit 50, a deposition unit 60, a second web forming unit 70, The conveyance part 79, the shaping | molding part 80, and the cutting part 90 are provided. The crushing unit 12, the defibrating unit 20, the sorting unit 40, and the first web forming unit 45 constitute a defibrating unit 101 that refines the raw material MA to obtain the material of the sheet S. Further, the rotating body 49, the mixing unit 50, the stacking unit 60, the second web forming unit 70, the forming unit 80, and the cutting unit 90 process the material obtained in the defibrating processing unit 101 to manufacture the sheet S. The manufacturing unit 102 is configured.

The supply unit 10 is an automatic feeding device that houses the raw material MA and continuously feeds the raw material MA into the crushing unit 12. The raw material MA should just contain a fiber, for example, a waste paper, a waste paper, and a pulp sheet.
The crushing unit 12 includes a crushing blade 14 that cuts the raw material MA supplied by the supply unit 10, and the raw material MA is cut in the air with the crushing blade 14 to form pieces of several cm square. The shape and size of the strip are arbitrary. The crushing part 12 can use a shredder, for example. The raw material MA cut by the crushing unit 12 is collected by the hopper 9 and conveyed to the defibrating unit 20 via the pipe 2.

  The defibrating unit 20 defibrates the crushed pieces cut by the crushing unit 12. Defibration is a process of unraveling the raw material MA in a state where a plurality of fibers are bound into one or a small number of fibers. The raw material MA can also be called a material to be defibrated. When the defibrating unit 20 defibrates the raw material MA, an effect of separating substances such as resin particles, ink, toner, and a bleeding inhibitor adhering to the raw material MA from the fiber can be expected. What has passed through the defibrating unit 20 is called a defibrated material. In addition to the defibrated fiber, the defibrated material includes resin particles separated from the fiber when the fiber is unwound, ink, toner and other colorants, anti-bleeding materials, paper strength enhancers, etc. An additive may be included. The resin particle contained in the defibrated material is a resin mixed in order to bind a plurality of fibers during the production of the raw material MA. The shape of the fiber contained in the defibrated material is a string shape or a ribbon shape. The fibers contained in the defibrated material may exist in an independent state that is not intertwined with other fibers. Alternatively, it may exist in a state where it is intertwined with other defibrated defibrated material to form a so-called “dama”.

  The defibrating unit 20 performs defibration by a dry method. The dry process means that treatment such as defibration is performed in the air (in the air), not in the liquid. The defibrating unit 20 can be configured using, for example, a defibrating machine such as an impeller mill. Specifically, the defibrating unit 20 includes a rotating rotor (not shown) and a liner (not shown) positioned on the outer periphery of the rotor (not shown), and sandwiches the coarsely crushed pieces between the rotor and the liner. Defibricate with.

  Crushed pieces are conveyed from the crushing unit 12 to the defibrating unit 20 by airflow. A structure in which the defibrating unit 20 generates this airflow may be used, or a blower (not shown) is provided upstream or downstream of the defibrating unit 20 in the conveying direction of coarsely crushed pieces or defibrated material to generate an airflow You may let them. Further, the defibrated material is transferred from the defibrating unit 20 to the sorting unit 40 through the pipe 3 by an air flow. The air flow that conveys the defibrated material to the sorting unit 40 may be generated by the defibrating unit 20 or may use the air flow of the blower described above.

  The sorting unit 40 sorts the components contained in the defibrated material defibrated by the defibrating unit 20 according to the fiber size. The fiber size mainly refers to the length of the fiber. The sorting unit 40 includes a drum unit 41 and a housing unit 43 that accommodates the drum unit 41. The drum part 41 uses a sieve, for example. Specifically, the drum portion 41 includes a net, a filter, a screen, and the like that have an opening and function as a sieve. Specifically, the drum portion 41 has a cylindrical shape that is rotationally driven by a motor, and at least a part of the peripheral surface is a net. The net of the drum unit 41 is composed of a metal net, an expanded metal obtained by extending a cut metal plate, a punching metal, or the like. The defibrated material introduced into the drum portion 41 from the introduction port 42 is divided into a passing material that passes through the opening of the drum portion 41 and a residue that does not pass through the opening by the rotation of the drum portion 41. The passing material that has passed through the opening contains fibers or particles that are smaller than the opening, and this is used as the first selection. The residue includes fibers larger than the openings, undefibrated pieces, and lumps, and this is called a second selection. The first selected item descends in the housing portion 43 toward the first web forming portion 45. The second selected item is conveyed to the defibrating unit 20 through the pipe 8 from the discharge port 44 communicating with the inside of the drum unit 41. The selection unit 40 corresponds to a separation unit.

  The sheet manufacturing apparatus 100 may include a classifier that sorts and separates the first sorted product and the second sorted product in place of the sorting unit 40. The classifier is, for example, a cyclone classifier, an elbow jet classifier, or an eddy classifier. These classifiers may be configured to separate smaller ones or lower ones of the components included in the first selection. For example, the structure which isolate | separates with a classifier and removes the resin grain, colorant, and additive which were peeled from the fiber by the defibrating part 20 from the 1st selection thing can be employ | adopted. In this case, the first selected product can be conveyed to the first web forming unit 45 or the mixing unit 50 in a state in which fine particles such as resin particles, colorants, and additives are removed.

  The first web forming unit 45 includes a mesh belt 46, a stretching roller 47, and a suction unit 48. The mesh belt 46 is an endless metal belt and is stretched around a plurality of stretching rollers 47. The mesh belt 46 circulates on a track formed by the stretching roller 47. A part of the track of the mesh belt 46 is flat below the drum portion 41, and the mesh belt 46 forms a flat surface.

  A large number of openings are formed in the mesh belt 46. Of the first selection that descends from the drum portion 41 located above the mesh belt 46, a component larger than the opening of the mesh belt 46 accumulates on the mesh belt 46. In addition, a component smaller than the opening of the mesh belt 46 in the first selection passes through the opening. The component that passes through the opening of the mesh belt 46 is referred to as a third selection item. The third selection product includes fibers that are shorter than the opening of the mesh belt 46 among the fibers contained in the defibrated material, and particles that include resin particles separated from the fibers by the defibrating unit 20, ink, toner, a bleeding inhibitor, and the like. Including.

  The suction unit 48 sucks air from below the mesh belt 46. The suction part 48 is connected to the first dust collecting part 27 via the pipe 23. The 1st dust collection part 27 isolate | separates a 3rd selection thing from an airflow. The configuration of the first dust collecting unit 27 will be described later. A first collection blower 28 is installed downstream of the first dust collection unit 27, and the first collection blower 28 sucks air from the first dust collection unit 27, passes through the pipe 29, and the sheet manufacturing apparatus 100. Exhaust air outside.

  Since air is sucked from the suction portion 48 through the first dust collection portion 27 by the first collection blower 28, the third selected matter that has passed through the opening of the mesh belt 46 is collected by the first dust collection portion 27. The Since the first selection descending from the drum portion 41 is attracted to the mesh belt 46 by the air flow sucked by the suction portion 48, there is an effect of promoting the deposition.

  The components deposited on the mesh belt 46 have a web shape and constitute the first web W1. That is, the first web forming unit 45 forms the first web W <b> 1 from the first selected material selected by the selecting unit 40.

  The first web W1 is mainly composed of fibers larger than the openings of the mesh belt 46 among the components included in the first selection, and is formed in a soft and swelled state containing a large amount of air. The first web W <b> 1 is conveyed to the rotating body 49 as the mesh belt 46 moves.

  The rotating body 49 includes a base 49a connected to a drive unit (not shown) such as a motor, and a protrusion 49b protruding from the base 49a. The base 49a rotates in the direction R, so that the protrusion 49b becomes the base 49a. Rotate around. The protrusion 49b has, for example, a plate shape. In the example of FIG. 1, four protrusions 49b are provided at equal intervals on the base 49a.

  The rotating body 49 is located at the end of the flat portion of the track of the mesh belt 46. Since the track of the mesh belt 46 is bent downward at this end, the mesh belt 46 is bent downward and moved. For this reason, the first web W <b> 1 conveyed by the mesh belt 46 protrudes from the mesh belt 46 and contacts the rotating body 49. The first web W1 is unraveled when the protrusion 49b collides with the first web W1, and becomes a lump of small fibers. This lump passes through the tube 7 positioned below the rotating body 49 and is conveyed to the mixing unit 50. As described above, since the first web W1 has a soft structure in which fibers are deposited on the mesh belt 46, the first web W1 is easily divided when it collides with the rotating body 49.

  The position of the rotating body 49 is a position where the protrusion 49b can contact the first web W1, and the protrusion 49b does not contact the mesh belt 46. The distance between the protrusion 49b and the mesh belt 46 at the closest position is preferably, for example, 0.05 mm or more and 0.5 mm or less.

  The mixing unit 50 mixes the first selection product and the additive. The mixing unit 50 includes an additive supply unit 52 that supplies the additive, a pipe 54 that conveys the first selection product and the additive, and a mixing blower 56.

  An additive cartridge 52 a for accumulating additives is set in the additive supply unit 52. The additive cartridge 52a may be detachable from the additive supply unit 52. The additive supply unit 52 includes an additive extraction unit 52b that extracts an additive from the additive cartridge 52a, and an additive input unit 52c that discharges the additive extracted by the additive extraction unit 52b to the pipe 54. The additive take-out unit 52b includes a feeder (not shown) that feeds an additive made of fine powder or fine particles inside the additive cartridge 52a, and takes out the additive from a part or all of the additive cartridge 52a. The additive taken out by the additive takeout part 52b is sent to the additive supply part 52c. The additive charging part 52c accommodates the additive extracted by the additive extracting part 52b. The additive charging part 52 c is provided with a shutter (not shown) that can be opened and closed at the connection part with the pipe 54, and the additive taken out by the additive taking-out part 52 b is sent out to the pipe 54 by opening the shutter.

  The additive supplied from the additive supply unit 52 includes a resin (binding agent) for binding a plurality of fibers. The resin contained in the additive melts when passing through the molded part 80 to bind a plurality of fibers. This resin is a thermoplastic resin or a thermosetting resin. For example, AS resin, ABS resin, polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylic resin, polyester resin, polyethylene terephthalate, polyphenylene ether, polybutylene terephthalate, nylon Polyamide, polycarbonate, polyacetal, polyphenylene sulfide, polyether ether ketone, and the like. These resins may be used alone or in combination.

  The additive supplied from the additive supply unit 52 may include components other than the resin that binds the fibers. For example, depending on the type of sheet S to be produced, a colorant for coloring fibers, an aggregation inhibitor for suppressing aggregation of fibers and resin, a flame retardant for making fibers difficult to burn, etc. May be included. The additive may be in the form of a fiber or powder.

  The mixing blower 56 generates an airflow in the pipe 54 that connects the pipe 7 and the deposition unit 60. In addition, the first selected product conveyed from the tube 7 to the tube 54 and the additive supplied to the tube 54 by the additive supply unit 52 are mixed when passing through the mixing blower 56. For example, the mixing blower 56 may include a motor (not shown), a blade (not shown) that is driven by the motor to rotate, and a case (not shown) that accommodates the blade. May be connected. Further, the mixing blower 56 may include a mixer that mixes the first selected material and the additive in addition to the blades that generate the airflow. The mixture mixed in the mixing unit 50 is conveyed to the deposition unit 60 by the air flow generated by the mixing blower 56 and is introduced into the introduction port 62 of the deposition unit 60.

  The deposition part 60 loosens the fibers of the mixture and lowers them to the second web forming part 70 while dispersing them in the air. When the additive supplied from the additive supply unit 52 is in the form of fibers, these fibers are also unraveled by the deposition unit 60 and descend to the second web forming unit 70.

  The deposition unit 60 includes a drum unit 61 and a housing unit 63 that accommodates the drum unit 61. The drum unit 61 is, for example, a cylindrical structure configured in the same manner as the drum unit 41. The drum unit 61 is rotated by the power of a motor (not shown) similarly to the drum unit 41 and functions as a sieve. The drum part 61 has an opening, and lowers the mixture unraveled by the rotation of the drum part 61 from the opening.

  A second web forming unit 70 is disposed below the drum unit 61. The second web forming unit 70 includes, for example, a mesh belt 72, a tension roller 74, and a suction mechanism 76.

The mesh belt 72 is formed of an endless metal belt similar to the mesh belt 46, and is stretched around a plurality of stretching rollers 74. The mesh belt 72 circulates on a track formed by the stretching roller 74. A part of the track of the mesh belt 72 is flat below the drum portion 61, and the mesh belt 72 forms a flat surface. The mesh belt 72 has a large number of openings.
Among the mixture descending from the drum portion 61 located above the mesh belt 72, a component larger than the opening of the mesh belt 72 is deposited on the mesh belt 72. Further, components smaller than the opening of the mesh belt 72 in the mixture pass through the opening.

  The suction mechanism 76 includes a blower (not shown), and sucks air from the side opposite to the drum portion 61 with respect to the mesh belt 72. The component that has passed through the opening of the mesh belt 72 is sucked by the suction mechanism 76. The airflow sucked by the suction mechanism 76 has an effect of attracting the mixture descending from the drum portion 61 to the mesh belt 72 and promoting deposition. Further, the airflow of the suction mechanism 76 can be expected to form a downflow in a path where the mixture falls from the drum portion 61, and to prevent the fibers from being entangled during the fall. The component deposited on the mesh belt 72 has a web shape and constitutes the second web W2.

  A humidity control unit 78 is provided on the downstream side of the accumulation unit 60 in the conveyance path of the mesh belt 72. The humidity control unit 78 is a mist type humidifier that supplies water in the form of a mist toward the mesh belt 72. The humidity control unit 78 includes, for example, a tank that stores water and an ultrasonic transducer that mists water. Since the moisture content of the second web W2 is adjusted by the mist supplied from the humidity control section 78, an effect of suppressing adsorption of fibers to the mesh belt 72 by static electricity can be expected.

  The second web W2 is peeled off from the mesh belt 72 by the transport unit 79 and transported to the forming unit 80. The conveyance unit 79 includes, for example, a mesh belt 79a, a roller 79b, and a suction mechanism 79c. The suction mechanism 79c includes a blower (not shown), and generates an upward airflow through the mesh belt 79a by the suction force of the blower. Due to this airflow, the second web W2 is separated from the mesh belt 72 and is adsorbed by the mesh belt 79a. The mesh belt 79a is moved by the rotation of the roller 79b, and conveys the second web W2 to the forming unit 80.

  Similar to the mesh belt 46 and the mesh belt 72, the mesh belt 79a can be formed of an endless metal belt having an opening.

  The second web forming unit 70 is provided with a belt cleaning mechanism 65. The belt cleaning mechanism 65 is provided in a part of the path through which the mesh belt 72 circulates. As shown in FIG. 1, the belt cleaning mechanism 65 is disposed downstream of the position where the second web W <b> 2 is separated from the mesh belt 72 in the transport unit 79 and upstream of the deposition unit 60. The belt cleaning mechanism 65 is preferably arranged at a position close to the deposition unit 60.

  The belt cleaning mechanism 65 is a mechanism for removing fibers and particles attached to the mesh belt 72 from the mesh belt 72 and removing them. The belt cleaning mechanism 65 includes, for example, a brush (not shown) that scrapes fibers and particles from the mesh belt 72 and a hopper (not shown) that collects fibers and particles scraped by the brush. A tube 66 is connected to the.

A second collection blower 68 is connected to the tube 66 through a second dust collection unit 67.
The second collection blower 68 sucks air through the second dust collection portion 67, and the fibers and particles scraped off by the belt cleaning mechanism 65 by the suction force of the second collection blower 68 are removed from the belt cleaning mechanism 65. Sucked into tube 66. The airflow flowing through the pipe 66 passes through the second dust collecting portion 67. The second collection blower 68 includes a filter (not shown) and separates and collects fibers and particles from the airflow flowing from the pipe 66. The second collection blower 68 discharges the air that has passed through the second dust collection unit 67 to the outside of the sheet manufacturing apparatus 100.

  The tube 66, the second dust collecting portion 67, and the second collection blower 68 can have the same configuration as the tube 23, the first dust collection portion 27, and the first collection blower 28 described above.

The forming unit 80 heats the second web W2 to bind the fibers derived from the first selection contained in the second web W2 with the resin contained in the additive.
The forming unit 80 includes a pressurizing unit 82 that pressurizes the second web W2 and a heating unit 84 that heats the second web W2 pressurized by the pressurizing unit 82. The pressure unit 82 includes a pair of calendar rollers 85 and 85. The pressurizing unit 82 includes a press mechanism (not shown) that applies nip pressure to the calendar rollers 85 and 85 by hydraulic pressure, and a drive unit (not shown) such as a motor that rotates the calendar rollers 85 and 85 toward the heating unit 84. Connected to The pressurizing unit 82 pressurizes the second web W <b> 2 with a predetermined nip pressure by the calendar rollers 85 and 85, and conveys the second web W <b> 2 toward the heating unit 84. The heating unit 84 includes a pair of heating rollers 86 and 86. The heating unit 84 includes a heater (not shown) that heats the peripheral surface of the heating roller 86 to a predetermined temperature, and a drive unit (not shown) such as a motor that rotates the heating rollers 86 and 86 toward the cutting unit 90. . The heating unit 84 applies heat to the second web W <b> 2 that has been densified by the pressure unit 82, and conveys the heat to the cutting unit 90. The second web W <b> 2 is heated to a temperature higher than the glass transition point of the resin contained in the second web W <b> 2 in the heating unit 84 to become a sheet S.

  The cutting unit 90 cuts the sheet S formed by the forming unit 80. The cutting unit 90 includes a first cutting unit 92 that cuts the sheet S in a direction that intersects with the conveyance direction of the sheet S indicated by a symbol F in the drawing, and a second cutting unit that cuts the sheet S in a direction parallel to the conveyance direction F. 94. The cutting unit 90 cuts the length and width of the sheet S into a predetermined size to form a single sheet S. The sheet S cut by the cutting unit 90 is accommodated in the discharge unit 96. The discharge unit 96 includes a tray and a stacker for storing manufactured sheets, and the user can take out and use the sheet S discharged to the tray.

  Each unit of the sheet manufacturing apparatus 100 constitutes a defibrating processing unit 101 and a manufacturing unit 102. The defibrating unit 101 includes at least the defibrating unit 20 and may include the sorting unit 40 and the first web forming unit 45. The defibrating unit 101 manufactures a defibrated material from the raw material MA or a first web W1 in which the defibrated material is made into a web. The product of the defibrating unit 101 can be not only transported to the mixing unit 50 via the rotating body 49 but also taken out from the sheet manufacturing apparatus 100 and stored without being transferred to the rotating body 49. Moreover, it is good also as a form which can enclose this manufactured product in a predetermined package, and can convey and trade.

  The manufacturing unit 102 is a functional unit that regenerates the product manufactured by the defibrating processing unit 101 into the sheet S, and corresponds to a processing unit. The manufacturing unit 102 includes a mixing unit 50, a deposition unit 60, a second web forming unit 70, a conveying unit 79, a molding unit 80, and a cutting unit 90, and may include a rotating body 49. Moreover, you may include the additive supply part 52. FIG.

  In the sheet manufacturing apparatus 100, the defibrating unit 101 and the manufacturing unit 102 may be configured as a single unit or may be configured as separate units. In this case, the defibrating unit 101 corresponds to the fiber raw material recycling apparatus of the present invention. The manufacturing unit 102 corresponds to a sheet forming unit that forms the defibrated material into a sheet shape. Moreover, it can be said that all of these correspond to the processing parts.

[1-2. Configuration of first dust collecting unit]
FIG. 2 is a view showing the first dust collecting unit 27 together with the peripheral configuration. FIG. 3 is a view showing the internal structure of the first dust collecting unit 27.

  As illustrated in FIG. 2, the sheet manufacturing apparatus 100 includes a control unit 150 (FIG. 2) that controls each unit of the sheet manufacturing apparatus 100. The control unit 150 includes a processor that executes a control program for controlling the sheet manufacturing apparatus 100. The processor includes a CPU (Central Processing Unit), a microcomputer, and the like. The control unit 150 may include a ROM (Read Only Memory) that stores a program executed by the processor and a RAM (Random Access Memory) that forms a work area. The control unit 150 may be an integrated chip that integrates a processor, a ROM, a RAM, and the like.

  The control unit 150 is connected to each unit of the sheet manufacturing apparatus 100 and controls the operation of each unit. FIG. 2 illustrates the first collection blower 28, the touch panel 160, the compressor 281, and the selection circuit 282 as control targets of the control unit 150. The touch panel 160 is disposed on the front surface of the main body (not shown) of the sheet manufacturing apparatus 100, and includes a display screen that displays a screen related to the operating state and operation settings of the sheet manufacturing apparatus 100, and a touch sensor that detects a touch operation. Prepare. The touch panel 160 displays the setting content related to the operation of the sheet manufacturing apparatus 100 under the control of the control unit 150 and receives an input related to the setting of the sheet manufacturing apparatus 100.

The compressor 281 and the selection circuit 282 constitute a part of the first dust collecting unit 27.
The compressor 281 takes in and compresses air outside the sheet manufacturing apparatus 100 and supplies compressed air. The compressor 281 may include an air tank that stores compressed air. The selection circuit 282 supplies the compressed air supplied from the compressor 281 to the housing 241 of the first dust collecting unit 27. The operation of the selection circuit 282 will be described later. The compressor 281 corresponds to a gas supply device.

  As shown in FIG. 2 and FIG. 3, the first dust collecting unit 27 includes a housing 241 that is a main body of the first dust collecting unit 27 and a collection box that collects the third sorted matter collected by the housing 241. 261. The collection box 261 is connected to the housing 241 by an elevating mechanism 251 so as to be movable up and down. The first dust collection unit 27 corresponds to a collection device and a collection unit.

  The housing 241 is provided with a first housing 242 that accommodates the plurality of filter portions 240 and a chamber that is provided above the first housing 242 and into which the air from which the third selection has been removed by the filter portion 240 flows. And a second housing 243.

The tube 23 is connected to the first housing 242. The tube 23 communicates with the space outside the filter unit 240 in the first housing 242, and the airflow including the third selected material flows into the first housing 242 from the tube 23.
A tube 244 is connected to the second housing 243. The tube 244 is a hollow tube that communicates with the internal space 243 c of the second housing 243 and is connected to the first collection blower 28. The first collection blower 28 sucks the air in the internal space 243 c through the tube 244.

  In the flow path of the airflow passing through the tube 23, the first dust collection unit 27, and the first collection blower 28, the internal space 243 c is located downstream of the filter unit 240. Therefore, the first collection blower 28 sucks the air from which the third selection product has been removed by the filter unit 240.

  In the first housing 242, a plurality of filter parts 240 are provided at intervals. The number and arrangement state of the filter units 240 may be appropriately changed. In the present embodiment, a configuration example in which eight filter units 240 are arranged in the first housing 242 is shown.

  The filter unit 240 includes a hollow cylindrical filter 305, and an opening 305 b is opened on the upper surface 305 a of the filter 305. The shape and size of the filter 305 are arbitrary. In the present embodiment, the filter 305 has a cylindrical shape as an example, and the opening 305b is a circular opening.

  The internal space 306 of the filter 305 communicates with the internal space 243c through the opening 305b. The air containing the 3rd sort which flowed in into the 1st case 242 from pipe 23 by suction power of the 1st collection blower 28 passes filter 305, as shown by air current F1 in FIG. Here, the third sorted matter is collected by the filter 305, and the air from which the third sorted matter has been removed flows into the internal space 306. This air flows through the opening 305b to the internal space 243c.

  The collection box 261 is located below the filter unit 240. A collection bag 262 is accommodated in the collection box 261. The collection bag 262 is fixed inside the collection box 261 with the top opened.

  The 3rd sort collected by filter 305 adheres to the outer surface of filter 305, or falls from the outer surface of filter 305 by gravity. The third selected item dropped from the filter 305 falls downward and enters the collection bag 262. Therefore, in the first dust collection unit 27, the third selected item sucked by the suction unit 48 can be collected in the collection bag 262.

  The space inside the first dust collecting unit 27 is partitioned by a filter 305 into a clean side (so-called clean side) and an unpurified side (so-called dirty side). In the flow path of the air flow F1, the upstream side of the filter 305 is a dirty side, and the tube 23 is connected to the dirty side. The space outside the filter 305 and the collection box 261 correspond to the dirty side. In the flow path of the air flow F1, the downstream side of the filter 305 is a clean side. The internal space 306, the internal space 243c, and the pipe 244 are located on the clean side, and the first collection blower 28 is connected to the clean side.

  The sheet manufacturing apparatus 100 includes a backwashing mechanism that backwashes the third selection collected by the filter unit 240 to wash the filter unit 240. Backwashing refers to an operation, process, or process in which the third selection attached to the filter 305 is separated from the filter 305 by the backwashing airflow F3 in the direction opposite to the airflow F1. The third selected item separated from the filter 305 or blown off by the air flow F <b> 2 falls and is stored in the collection bag 262.

The backwash structure includes a compressor 281, a selection circuit 282, a compressed air nozzle 308, and an injection unit 310.
Each of the eight filter parts 240 is provided with a compressed air nozzle 308. The compressed air nozzle 308 is connected to the selection circuit 282 by an air pipe 246 that supplies compressed air. Since the air pipe 246 is connected to each compressed air nozzle 308, eight air pipes 246 are connected to the selection circuit 282. In addition, the structure which the one air piping 246 branches and is connected to the some compressed air nozzle 308 may be sufficient. Therefore, the number of the air pipes 246 connected to the selection circuit 282 may be one or more, but in order to use the function of the selection circuit 282, a plurality is preferable, and the number of the compressed air nozzles 308 is more than half. It is more preferable.

The selection circuit 282 selects one or a plurality of air pipes 246 to be supplied with compressed air from the plurality of air pipes 246 under the control of the control unit 150.
Specifically, the selection circuit 282 includes a pipe (not shown) to which compressed air is supplied from the compressor 281 and a branch pipe (not shown) connecting the pipe and each air pipe 246. The selection circuit 282 includes an actuator (not shown) that contacts and separates each branch pipe with a pipe connected to the compressor 281. This actuator operates under the control of the control unit 150.
The selection circuit 282 selectively connects the compressor 281 and one or more of the air pipes 246 by operating an actuator (not shown). Thereby, compressed air is supplied to any one of the air pipes 246.

  The compressed air nozzle 308 is a nozzle that blows out the compressed air supplied from the air pipe 246 to the internal space 243c. An injection unit 310 is attached to the compressed air nozzle 308. As will be described later, the injection unit 310 is a mechanical mechanism that is operated by the pressure of the compressed air blown out by the compressed air nozzle 308, and sends the compressed air into the internal space 306 to generate the backwash airflow F3.

  As described above, the control unit 150 operates the compressor 281 to generate compressed air, controls the selection circuit 282, and selects the air piping 246, thereby selecting the plurality of filter units 240 of the housing 241. Thus, the backwash airflow F3 is generated. Therefore, the control unit 150 can perform the backwashing by selecting the filter unit 240 of the first dust collecting unit 27 to generate the backwashing airflow F3. For this reason, for example, backwashing can be performed by sequentially selecting one or a plurality of filter parts 240 among the filter parts 240 of the first dust collecting part 27. In this case, the compressed air supplied by the compressor 281 is concentrated on one or a few filter parts 240, so that the flow rate and / or pressure of the backwash air flow F3 can be stabilized at a high level, and effective backwashing can be performed. Yes.

  The compressed air nozzle 308 and the injection unit 310 are disposed at a position facing the opening 305b in the internal space 243c. The injection unit 310 is contracted in a state where the compressed air nozzle 308 does not blow out compressed air. For this reason, since the injection part 310 and the inside of the opening 305b are separated, the airflow in the internal space 243c is not disturbed. When the compressed air nozzle 308 blows out the compressed air, the ejection unit 310 extends toward the opening 305b, and the tip of the ejection unit 310 reaches the opening 305b. FIG. 3 shows a state where one injection unit 310 is expanded and the other injection unit 310 is contracted. In a state where the tip of the injection unit 310 reaches the opening 305b, the compressed air blown out by the compressed air nozzle 308 is guided to the opening 305b by the injection unit 310, and a backwash air flow F3 is generated in the internal space 306.

FIG. 4 is a principal cross-sectional view showing the configuration of the ejection unit 310, and shows a longitudinal section in the longitudinal direction of the ejection unit 310.
The injection unit 310 includes a telescopic duct 320 that can be expanded and contracted. The expansion duct 320 is a hollow duct formed of a flexible material such as a synthetic resin (including an elastomer), rubber, or a thin metal plate that can be elastically deformed, and has a bellows-shaped expansion / contraction section 321. The elastic part 321 can be extended by an external force. Further, the base 324 connected to the stretchable part 321 may be stretchable.
The internal space of the telescopic duct 320 becomes an air chamber 320a into which compressed air is injected from the compressed air nozzle 308. The cross section of the telescopic duct 320 is a circle or an ellipse, but may be a square shape. The extension duct 320 corresponds to an extension member.

  The expansion / contraction part 321 maintains a contracted state when the compressed air nozzle 308 does not inject compressed air. That is, the expansion / contraction part 321 has elasticity acting in the contraction direction (symbol C in the figure). When the compressed air nozzle 308 injects compressed air and the air pressure in the air chamber 320a increases, the expansion / contraction part 321 extends in the direction indicated by symbol E against the contraction force due to its elasticity. The air pressure of the air chamber 320a necessary for extending the extendable part 321 (that is, the pressure inside the air chamber 320a) is defined as the first pressure.

  The base 324 of the telescopic part 321 is fixed to the upper surface 243b of the second housing 243. The compressed air nozzle 308 passes through the upper surface 243b and is disposed so as to protrude into the internal space 243c, and is accommodated in the air chamber 320a.

  A nozzle portion 322 is formed at the tip of the telescopic duct 320. The nozzle part 322 may be configured as a member different from the expansion / contraction part 321 and may be connected to the nozzle part 322. The nozzle part 322 may be formed integrally with the expansion / contraction part 321.

  The tip of the nozzle part 322 has a tapered shape, and an injection port 323 opens at the tip. A seal member 330 is attached to the outside of the nozzle portion 322. The seal member 330 has a taper that narrows toward the distal end side of the telescopic duct 320, and the seal surface 331 that is a tapered surface is made of a flexible material such as synthetic resin (including elastomer) or rubber. , Has a sealing property. The whole seal member 330 may be made of a flexible material. The seal member 330 is a member having a circular cross section, and is a so-called packing or gasket. The seal member 330 corresponds to a closing part. Moreover, the directivity of the backwash airflow F3 can be improved as the front-end | tip of the nozzle part 322 is a tapered shape. Moreover, the backwash airflow F3 can be diffused if it is a shape where the opening of the front-end | tip of the nozzle part 322 spreads.

  The nozzle part 322 has a cylindrical part 320b on the expansion / contraction part 321 side. The cylindrical portion 320b has a hollow straight tube shape. The seal member 330 has a circular hole that fits the outer diameter of the cylindrical portion 320b, and is fixed in a state where the cylindrical portion 320b is fitted into this hole.

  A valve 340 is disposed inside the nozzle portion 322, that is, at the tip of the air chamber 320a. The valve 340 includes a valve body 341, a valve seat 342, and a spring member 343. The valve 340 corresponds to a valve mechanism. The valve body 341 is a spherical body, and the valve seat 342 is positioned on the air chamber 320a side of the valve seat 342. The valve seat 342 has a circular valve body opening 342a, and the valve body opening 342a is closed when the valve body 341 contacts. The valve body 341 and the valve seat 342 may have any shape as long as the valve body opening 342a is closed by the valve body 341. The valve body 341 and the valve seat 342 are preferably made of a flexible material such as a synthetic resin (including an elastomer) or rubber, or a metal such as aluminum, copper, or an alloy containing these (for example, brass). . The valve body 341 is biased toward the valve seat 342 by the spring member 343. That is, the spring member 343 is a biasing member that is located in the air chamber 320a and biases the valve body 341 toward the valve seat 342, and is a compression coil spring in this embodiment. The spring member 343 is made of a metal compression coil spring or another compression spring made of an elastic material.

  The valve 340 opens and closes the air flow path between the air chamber 320 a and the injection port 323. The valve 340 is configured such that air can flow through the valve element opening 342 a, but the valve element opening 342 a is closed by the valve element 341 by the elasticity of the spring member 343. When the air pressure in the air chamber 320a increases, the valve body 341 moves toward the injection port 323 against the biasing force of the spring member 343, and the valve body opening 342a is opened by this movement. The air pressure in the air chamber 320a necessary for moving the valve body 341 toward the injection port 323 is defined as the second pressure.

[1-3. Operation of injection unit]
When compressed air is supplied from the selection circuit 282 to the air pipe 246 under the control of the control unit 150, the compressed air nozzle 308 injects the air flow F2 into the air chamber 320a. The path from the tip of the air chamber 320a to the injection port 323 is closed by the valve 340, and the second pressure described above is higher than the first pressure. For this reason, the air pressure in the air chamber 320a increases. When the air pressure in the air chamber 320a reaches the first pressure, the expansion / contraction part 321 expands and moves the nozzle part 322 toward the opening 305b. Here, the expansion / contraction part 321 functions as a moving mechanism for moving the nozzle part 322.

  When the seal member 330 comes into contact with the upper surface 305a of the filter 305 due to the extension / contraction part 321 extending, extension of the extension / contraction part 321 is restricted. After this, since the expansion / contraction part 321 does not expand, when the compressed air nozzle 308 continues to inject the compressed air, the internal pressure of the air chamber 320a increases. When the air pressure in the air chamber 320a reaches the second pressure, the valve body 341 moves to the injection port 323 side, and the valve body opening 342a opens. Thereby, compressed air is injected from the injection port 323. Since the air chamber 320a is pressurized to the second pressure, the pressure of the compressed air injected from the injection port 323 is high.

  In the state where the seal member 330 is in contact with the upper surface 305a, the seal surface 331 is in contact with the peripheral portion of the opening 305b. Since the seal surface 331 is pressed against the upper surface 305a by the air pressure of the air chamber 320a, the opening 305b is closed by the seal member 330. For this reason, most of the backwash airflow F3 is sent to the internal space 306 without leaking into the internal space 243c, and the third selection is removed from the filter 305.

As described above, the first dust collecting unit 27 according to the first embodiment to which the present invention is applied includes the housing 241 into which an air flow including the third selected item that is the collection target flows and the third selected item. It has a filter 305 to collect. The first dust collection unit 27 includes a filter unit 240 provided with an opening 305 b that allows the airflow that has passed through the filter 305 to flow out. The first dust collecting unit 27 includes a nozzle unit 322 provided with an injection port 323 for injecting gas, and includes an injection unit 310 that moves the nozzle unit 322 to a position where the nozzle unit 322 contacts the opening 305b. The first dust collecting unit 27 ejects gas from the ejection port 323 in a state where the nozzle unit 322 is in contact with the opening 305b.
According to this configuration, the nozzle is brought into contact with the opening 305b of the filter 305 and the gas is injected, so that most of the injected gas passes through the filter 305, and the third gas adhered to the filter 305 by the injection of the gas. Sorted items can be dropped. For this reason, the filter 305 can be effectively cleaned by the airflow.

  In the first dust collecting unit 27, the sheet manufacturing apparatus 100 includes a seal member 330 that contacts the opening 305b and closes the opening 305b when the nozzle unit 322 moves to the opening 305b. For this reason, since most of the backwash airflow F3 ejected by the ejection port 323 flows into the internal space 306, the third selected matter attached to the filter 305 can be effectively dropped by the pressure of the backwash airflow F3. it can.

  The injection unit 310 has an air chamber 320a into which gas can be injected, and extends by the pressure of the gas injected into the air chamber 320a to move the nozzle unit 322 toward the opening 305b. For this reason, it is not necessary to give the power for exclusive use for extending the expansion-contraction duct 320, and the injection part 310 can be operated with the pressure of the airflow F2 which the compressed air nozzle 308 injects. Therefore, it is possible to avoid complication of the device configuration.

  In addition, since the compressed air injected into the injection unit 310 is injected from the injection port 323 in a state where the nozzle unit 322 is in contact with the opening 305b, the third selected matter attached to the filter 305 is removed from the backwash air flow F3. It can be effectively removed by pressure.

  In addition, since the expansion / contraction part 321 and the nozzle part 322 are connected and the injection port 323 communicates with the air chamber 320a, the air flow F2 injected by the compressed air nozzle 308 efficiently flows into the internal space 306 as the backwash air flow F3. be able to.

  Further, the ejection unit 310 expands and moves the nozzle unit 322 when the atmospheric pressure in the air chamber 320a reaches the first pressure. The nozzle portion 322 has a valve mechanism that moves gas from the air chamber 320a to the injection port 323 when the atmospheric pressure in the air chamber 320a reaches the second pressure, and the second pressure is higher than the first pressure. For this reason, the expansion / contraction part 321 is extended by the pressure of the airflow F2, and the backwash airflow F3 can be injected into the internal space 306 after the nozzle part 322 contacts the upper surface 305a. For this reason, the filter 305 can be cleaned by efficiently using the pressure of the airflow F2.

  In addition, the injection unit 310 includes an expansion / contraction part 321 provided integrally with the base part of the nozzle part 322 or connected to the nozzle part 322. The expansion / contraction part 321 is configured to expand when the atmospheric pressure in the air chamber 320a reaches the first pressure. The nozzle portion 322 has a valve mechanism that maintains a closed state by the elasticity of the spring member. When the atmospheric pressure in the air chamber 320a reaches the second pressure, the spring member is deformed and gas is injected from the injection port 323. The

  The ejection unit 310 may have a configuration in which the expansion / contraction part 321 is connected to the base part of the nozzle part 322. In this case, the expansion / contraction part 321 is configured to expand when the atmospheric pressure in the air chamber 320a reaches the first pressure. The nozzle portion 322 has a valve mechanism that maintains a closed state by the elasticity of the spring member. When the atmospheric pressure in the air chamber 320a reaches the second pressure, the spring member is deformed and gas is injected from the injection port 323. The

  The first dust collection unit 27 includes a plurality of filters 305 in the housing 241 and includes a plurality of ejection units 310 corresponding to the respective filters 305. The first dust collection unit 27 includes a selection circuit 282 that supplies gas to each of the plurality of ejection units 310, and sequentially selects a predetermined number of the plurality of ejection units 310 and supplies gas from the selection circuit 282. For this reason, the several filter 305 with which the 1st dust collection part 27 is provided can be cleaned in order. In addition, the number of supply destination filters 305 that supply compressed air from the compressor 281 can be limited. As a result, the pressure and flow rate of the compressed air supplied by the compressor 281 can be concentrated in a limited number of internal spaces 306, and a higher pressure and higher flow backwash air flow F3 can be applied to the filter 305. Therefore, the plurality of filters 305 can be cleaned more effectively.

  Further, in the collection method using the first dust collecting unit 27, the nozzle unit 322 is moved to a position where the nozzle unit 322 is in contact with the opening 305b, and gas is injected from the nozzle unit 322 in a state where the nozzle unit 322 is in contact with the opening 305b. To do. According to this method, the nozzle is brought into contact with the opening 305b of the filter 305 and the gas is injected, so that most of the injected gas passes through the filter 305, and the third gas adhered to the filter 305 by the injection of this gas. Sorted items can be dropped. For this reason, the filter 305 can be effectively cleaned by the airflow.

  In addition, the sheet manufacturing apparatus 100 includes a defibrating unit 20 that defibrates the raw material MA including fibers, a defibrated material that has been defibrated by the defibrating unit 20, a first separated product that includes fibers, and a component that is smaller than the fibers. The separation part 40 which separates into the 2nd separated matter containing is provided. The sheet manufacturing apparatus 100 captures the manufacturing unit 102 that manufactures the sheet S as a recycled material from the first separated product separated by the sorting unit 40, and the second separated product, that is, the third sorted product separated by the sorting unit 40. The 1st dust collection part 27 which collects is provided. The 1st dust collection part 27 has the housing | casing 241 into which the airflow containing a 3rd selected material flows in, and the filter 305 which collects a 3rd selected material. The first dust collection unit 27 includes a filter unit 240 provided with an opening 305 b that allows the airflow that has passed through the filter 305 to flow out. Moreover, it has the nozzle part 322 in which the injection port 323 which injects gas was formed, and the injection part 310 which moves the nozzle part 322 to the position which contact | abuts to the opening 305b is provided. The first dust collecting unit 27 ejects gas from the ejection port 323 in a state where the nozzle unit 322 is in contact with the opening 305b. Thereby, the separated matter adhering to the filter 305 by gas injection can be dropped. For this reason, the filter 305 can be effectively cleaned by the airflow.

[2. Second Embodiment]
FIG. 5 is a cross-sectional view of the main part showing the configuration of the ejection unit 311 in the second embodiment, and shows a longitudinal section in the longitudinal direction of the ejection unit 311.
The injection unit 311 of the second embodiment is disposed in the first dust collecting unit 27 instead of the injection unit 310 (FIG. 4). In the description of the second embodiment, the illustration and description of each part configured similarly to the first embodiment are omitted.

  The injection unit 311 includes a seal 350 instead of the seal member 330 included in the injection unit 310. The tip of the telescopic duct 320 provided with the seal 350 is referred to as a nozzle portion 325. The nozzle part 325 has the injection port 323 similarly to the nozzle part 322, and injects the backwash airflow F3 from the injection port 323.

  The seal 350 includes a disc 351 and a seal member 352 fixed to the disc 351. The disc 351 and the seal member 352 have a circular hole, and are fixed to the expansion / contraction part 321 in a state where the cylindrical part 320b is fitted in the hole. The seal 350 corresponds to a blocking portion.

  The seal member 352 is made of a flexible material such as synthetic resin (including an elastomer) or rubber, and has a sealing property. The seal member 352 is in close contact with the periphery of the upper surface 305a while being in contact with the upper surface 305a, and closes the opening 305b. The disc 351 is a rigid member that can support the seal member 352 while being fixed to the cylindrical portion 320b.

The expansion / contraction duct 320 includes an expansion / contraction part 321, an injection port 323, and a base part 324 as in the first embodiment, and includes a valve 340.
When the air pressure in the air chamber 320a reaches the first pressure and the expansion / contraction part 321 expands, the nozzle part 325 moves toward the upper surface 305a due to the expansion of the expansion / contraction part 321. When the seal 350 comes into contact with the upper surface 305a, extension of the expansion / contraction part 321 is restricted. After this, since the expansion / contraction part 321 does not expand, when the compressed air nozzle 308 continues to inject the compressed air, the internal pressure of the air chamber 320a increases. When the air pressure in the air chamber 320a reaches the second pressure, the valve body 341 moves to the injection port 323 side, and the valve body opening 342a opens. Thereby, compressed air is injected from the injection port 323.

  With the seal 350 in contact with the upper surface 305a, the seal member 352 contacts the peripheral edge of the opening 305b. Since the seal member 352 is pressed against the upper surface 305a by the air pressure of the air chamber 320a, the opening 305b is closed by the seal 350. For this reason, most of the backwash airflow F3 is sent to the internal space 306 without leaking into the internal space 243c, and the third selection is removed from the filter 305.

  As described above, in the configuration in which the injection unit 311 of the second embodiment is used for the first dust collection unit 27, the same effect as the configuration described in the first embodiment can be obtained.

[3. Third Embodiment]
FIG. 6 is a cross-sectional view of the main part showing the configuration of the ejection unit 312 in the third embodiment, and shows a longitudinal section in the longitudinal direction of the ejection unit 312.
The injection unit 312 of the third embodiment is disposed in the first dust collecting unit 27 instead of the injection unit 310 (FIG. 4). In the description of the third embodiment, illustration and description of the components configured in the same manner as in the first and second embodiments are omitted.

  The injection unit 312 includes a flow restriction block 360 instead of the valve 340 included in the injection units 310 and 311. The tip of the telescopic duct 320 including the flow restriction block 360 is referred to as a nozzle portion 326. The nozzle part 326 has the injection port 323 similarly to the nozzle units 322 and 325, and jets the backwash airflow F <b> 3 from the injection port 323.

The flow restriction block 360 is positioned on the distal end side of the air chamber 320a and is fixed inside the nozzle portion 326. The material and shape of the flow restriction block 360 are arbitrary. The flow restriction block 360 corresponds to a valve mechanism.
The flow restriction block 360 is an orifice block having a flow hole 361 communicating from the air chamber 320a to the injection port 323. The cross-sectional area of the flow hole 361 is sufficiently smaller than the cross-sectional area of the air chamber 320a and the cross-sectional area of the injection port 323. For this reason, the flow restriction block 360 gives sufficient ventilation resistance to the airflow from the air chamber 320a toward the injection port 323.

  For this reason, when the compressed air nozzle 308 injects the airflow F2 into the air chamber 320a, the air pressure in the air chamber 320a increases. In this process, compressed air flows from the air chamber 320a to the injection port 323. However, since the flow hole 361 generates sufficient ventilation resistance, an increase in the air pressure in the air chamber 320a is not hindered. Thereafter, when the air pressure in the air chamber 320a reaches the first pressure, the expansion / contraction part 321 expands to move the nozzle part 322 toward the opening 305b. Here, the expansion / contraction part 321 functions as a moving mechanism for moving the nozzle part 322.

  When the seal member 330 comes into contact with the upper surface 305a of the filter 305 due to the extension / contraction part 321 extending, extension of the extension / contraction part 321 is restricted. After this, since the expansion / contraction part 321 does not expand, when the compressed air nozzle 308 continues to inject the compressed air, the internal pressure of the air chamber 320a increases. As the internal pressure of the air chamber 320a increases, the pressure and flow rate of the backwash air flow F3 flowing out to the internal space 306 through the flow holes 361 increase, and the filter 305 is cleaned.

  As described above, in the configuration in which the injection unit 312 of the third embodiment is used for the first dust collection unit 27, the same effect as the configuration described in the first embodiment can be obtained.

[4. Fourth Embodiment]
FIG. 7 is a cross-sectional view of the main part showing the configuration of the ejection unit 313 in the fourth embodiment, and shows a longitudinal section in the longitudinal direction of the ejection unit 313.

  The injection unit 313 of the fourth embodiment is disposed in the first dust collecting unit 27 instead of the injection unit 310 (FIG. 4). In the description of the fourth embodiment, illustration and description of the respective parts configured in the same manner as in the first to third embodiments will be omitted.

The injection unit 313 includes an expandable tube 370 instead of the expandable duct 320.
The telescopic tube 370 includes an outer tube 371, an inner tube 372, and a spring member 373. The outer tube 371 and the inner tube 372 are hollow rigid tubes, and the inner tube 372 is slidably accommodated inside the outer tube 371. The space between the inner surface of the outer tube 371 and the outer surface of the inner tube 372 may be closed or there may be some space. The cross sections of the outer tube 371 and the inner tube 372 are circular or elliptical, but may be rectangular. The elastic tube 370 corresponds to an elastic member.

  The base 374 of the outer tube 371 is fixed to the upper surface 243b, and the compressed air nozzle 308 is accommodated inside the outer tube 371. The spring member 373 is a tension coil spring housed in the outer tube 371, and the upper end of the spring member 373 is fixed to the outer tube 371 or the upper surface 243 b and the lower end is fixed to the inner tube 372. The inner tube 372 is pulled upward by the elasticity of the spring member 373. For this reason, at least a part of the inner tube 372 is accommodated in the outer tube 371 and maintains a contracted state. Further, when an external force that resists the pulling force of the spring member 373 acts in a direction that pulls the inner tube 372 downward, the inner tube 372 moves in the direction indicated by E, and the telescopic tube 370 extends.

The inner spaces of the outer tube 371 and the inner tube 372 are in communication with each other, and constitute an air chamber 370 a into which compressed air is injected from the compressed air nozzle 308.
A nozzle portion 375 is formed at the tip of the inner tube 372. The nozzle portion 375 may be configured as a member different from the inner tube 372 and connected to the inner tube 372. Further, the injection port 376 may be formed integrally with the inner tube 372.

  The tip of the nozzle portion 375 has a tapered shape, and an injection port 376 opens at the tip. A seal member 330 is attached to the outside of the nozzle portion 375. Further, a valve 340 is disposed inside the telescopic tube 370, that is, at the tip of the air chamber 370a. Moreover, the directivity of the backwash airflow F3 can be improved as the front-end | tip of the nozzle part 375 is a tapered shape. Moreover, the backwash airflow F3 can be diffused if it is a shape where the opening of the front-end | tip of the nozzle part 375 spreads.

  The telescopic tube 370 maintains a contracted state by the tensile force of the spring member 373 when the compressed air nozzle 308 does not inject compressed air. When the compressed air nozzle 308 injects compressed air and the air pressure in the air chamber 370a increases, the telescopic tube 370 expands in the direction indicated by symbol E against the contraction force of the spring member 373, and the injection port 376 Moving. The air pressure in the air chamber 320a necessary for extending the telescopic tube 370 is defined as the first pressure.

  When the expansion member 370 extends and the seal member 330 comes into contact with the upper surface 305a of the filter 305, the expansion of the expansion tube 370 is limited. After this, since the telescopic tube 370 does not expand, the internal pressure of the air chamber 370a increases when the compressed air nozzle 308 continues to inject the compressed air. When the air pressure in the air chamber 370a reaches the second pressure, the valve body 341 moves to the injection port 376 side, and the valve body opening 342a opens. Thereby, compressed air is injected from the injection port 376. Since the air chamber 370a is pressurized to the second pressure, the pressure of the compressed air injected from the injection port 376 is high.

  In the state where the seal member 330 is in contact with the upper surface 305a, the seal surface 331 is in contact with the peripheral portion of the opening 305b. Since the seal surface 331 is pressed against the upper surface 305a by the pressure of the air chamber 370a, the opening 305b is closed by the seal member 330. For this reason, most of the backwash airflow F3 is sent to the internal space 306 without leaking into the internal space 243c, and cleans the filter 305.

  As described above, in the configuration in which the injection unit 313 of the fourth embodiment is used for the first dust collection unit 27, the same effect as the configuration described in the first embodiment can be obtained.

[5. Other Embodiments]
Each of the above-described embodiments is merely a specific mode for carrying out the present invention described in the claims, and is not intended to limit the present invention. It is possible to implement in various embodiments.

  For example, in each of the above-described embodiments, the configuration in which the collection device and the collection unit of the present invention are applied to the first dust collection unit 27 that sucks and separates the third selection product from the selection unit 40 has been described. This invention is not limited to this, For example, the 2nd dust collection part 67 can be comprised as a collection device similarly to the 1st dust collection part 27 demonstrated by 1st-4th embodiment. In this case, the second collection blower 68 may be arranged similarly to the first collection blower 28 shown in FIG. The second collection blower 68 collects fibers and particles scraped from the mesh belt 72 by the belt cleaning mechanism 65 as a collection object. In this case, the effect obtained by applying the present invention to the second dust collecting portion 67 is the same as that of the first dust collecting portion 27. In this case, the belt cleaning mechanism 65 corresponds to a separation unit. Moreover, both the 1st dust collection part 27 and the 2nd dust collection part 67 are good also as said structure, and any one may be sufficient as it. Moreover, when discharging | emitting particle | grains and a fiber with airflow in the sheet manufacturing apparatus 100, the collection apparatus and collection part of this invention are applicable to all the structures which collect particle | grains and fiber from this airflow.

The present invention is not limited to the configuration examples described in the first to fourth embodiments, and the expansion / contraction duct 320 and the expansion / contraction pipe 370, the seal member 330 and the seal 350, and the valve 340 and the flow restriction block 360 are appropriately set. Can be combined.
That is, in 1st Embodiment, the injection part 310 comprised by providing the sealing member 330 and the valve 340 in the expansion-contraction duct 320 was demonstrated. In 2nd Embodiment, the injection part 311 comprised by providing the seal | sticker 350 and the valve 340 in the expansion-contraction duct 320 was demonstrated. Moreover, in 3rd Embodiment, the injection part 312 comprised by providing the expansion-contraction duct 320 with the sealing member 330 and the flow restriction block 360 was demonstrated. Moreover, in 4th Embodiment, the injection part 313 comprised by providing the expansion-contraction pipe | tube 370 with the sealing member 330 and the valve 340 was demonstrated. The present invention is not limited to these configurations, and any other combination can be adopted. For example, the injection unit may have a configuration in which the expansion and contraction duct 320 is provided with the seal member 330 and the flow restriction block 360. Further, the injection unit may be configured to include the seal member 330 and the flow restriction block 360 in the expansion / contraction tube 370, or may be configured to include the seal 350 and the valve 340 in the expansion / contraction tube 370. In addition, the injection unit may be configured to include the seal 350 and the flow restriction block 360 on the telescopic tube 370.

  Further, in the first dust collecting portion 27, the fineness of the filter 305 is arbitrary, and the filter 305 may be constituted by a nonwoven fabric or a porous material such as porous ceramics or sponge. Good. The material of each part which comprises the expansion-contraction duct 320, the expansion-contraction pipe | tube 370, and the 1st dust collection part 27 can also be selected suitably.

  In addition, for example, the compressed air nozzle 308 described in the above embodiment may be any one that can inject compressed air supplied by the compressor 281, and may inject compressed air from a plurality of holes. The gas supplied from the compressor 281 and injected by the compressed air nozzle 308 is not limited to air, and may be an inert gas such as nitrogen or argon, or may be other gas such as oxygen.

  Further, the moving mechanism for moving the nozzle portion 322 toward the opening 305b is not limited to the telescopic duct 320 and the telescopic tube 370, and may take other forms. Preferably, this moving mechanism should just operate | move with the pressure of the compressed air which the compressed air nozzle 308 injects.

  The sheet manufacturing apparatus 100 is not limited to the sheet S, and may be configured to manufacture a board-shaped or web-shaped product including a hard sheet or a stacked sheet. The product is not limited to paper but may be a non-woven fabric. The property of the sheet S is not particularly limited, and may be paper that can be used as recording paper for writing or printing (for example, so-called PPC paper), wallpaper, wrapping paper, colored paper, drawing paper, Kent paper, etc. There may be. When the sheet S is a non-woven fabric, it may be a general non-woven fabric, a fiber board, tissue paper, kitchen paper, cleaner, filter, liquid absorbent material, sound absorber, cushioning material, mat, or the like.

  Moreover, in the said embodiment, as the fiber raw material reproduction | regeneration apparatus of this invention, the dry-type sheet manufacturing apparatus 100 which obtains material by defibrating a raw material in air, and manufactures the sheet | seat S using this material and resin. Explained. The application target of the present invention is not limited to this, and the present invention can also be applied to a so-called wet sheet manufacturing apparatus in which a raw material containing fibers is dissolved or suspended in a solvent such as water and the raw material is processed into a sheet. Further, the present invention can also be applied to an electrostatic sheet manufacturing apparatus in which a material containing fibers defibrated in the air is adsorbed on the surface of the drum by static electricity or the like, and the raw material adsorbed on the drum is processed into a sheet.

  DESCRIPTION OF SYMBOLS 10 ... Supply part, 12 ... Crushing part, 20 ... Defibration part, 27 ... 1st dust collection part (collection apparatus), 28 ... 1st collection blower, 40 ... Sorting part (separation part), 45 ... 1st DESCRIPTION OF SYMBOLS 1 Web formation part, 46 ... Mesh belt, 48 ... Suction part, 49 ... Rotating body, 50 ... Mixing part, 52 ... Additive supply part, 56 ... Mixing blower, 60 ... Deposition part, 65 ... Belt cleaning mechanism, 67 ... Second dust collecting part (collecting device), 68 ... second collecting blower, 70 ... second web forming part, 72 ... mesh belt, 76 ... suction mechanism, 79 ... conveying part, 80 ... molding part, 90 ... cutting 96: Discharge unit, 100 ... Sheet manufacturing apparatus, 101 ... Defibration processing unit, 102 ... Manufacturing unit, 150 ... Control unit, 240 ... Filter unit, 241 ... Housing, 242 ... First housing, 243 ... First 2 housings, 243b ... upper surface, 243c ... internal space, 244 ... pipe, 46 ... Air piping, 251 ... Elevating mechanism, 261 ... Collection box, 262 ... Collection bag, 281 ... Compressor (gas supply device), 282 ... Selection circuit, 305 ... Filter, 305a ... Top surface, 305b ... Opening, 306 ... Internal space , 308 ... Compressed air nozzle, 310, 311, 312, 313. 376 ... Nozzle part, 323, 375 ... Injection port, 330 ... Seal member (blocking part), 331 ... Seal surface, 340 ... Valve (valve mechanism), 341 ... Valve body, 342 ... Valve seat, 342a ... Valve body opening 343: Spring member, 350: Seal (blocking portion), 351: Disc, 352: Seal member, 360: Flow restriction block (valve mechanism), 361: Flow hole 370 ... expansion pipe (elastic member), 371 ... outer tube, 372 ... inner tube, 373 ... spring member, F1 ... air flow, F2 ... air flow, F3 ... backwash stream, MA ... raw materials, S ... sheet.

Claims (10)

A housing into which an air flow including a collection target flows,
A filter unit having a filter for collecting the collection target object, and provided with an opening for allowing an airflow that has passed through the filter to flow out;
A nozzle part provided with an injection port for injecting gas, and an injection part for moving the nozzle part to a position in contact with the opening,
The collection apparatus which injects gas from the said injection port in the state which the said nozzle part contact | abutted to the said opening.   The said nozzle part is a collection apparatus of Claim 1 provided with the obstruction | occlusion part which contact | abuts to the said opening and obstruct | occludes the said opening when it moves to the said opening.   The said injection | spray part has an air chamber which can inject gas, It expand | extends by the pressure of the gas inject | poured into the said air chamber, and moves the said nozzle part toward the said opening. Collection device.   The collection device according to claim 3, wherein the gas injected into the injection unit is injected from the injection port in a state where the nozzle unit is in contact with the opening.   The collection device according to claim 3 or 4, wherein the injection unit and the nozzle unit are connected, and the injection port communicates with the air chamber. The injection unit extends when the atmospheric pressure in the air chamber reaches the first pressure and moves the nozzle unit,
The nozzle portion has a valve mechanism that moves gas from the air chamber to the injection port when the air pressure in the air chamber reaches a second pressure,
The collection device according to claim 5, wherein the second pressure is higher than the first pressure. The injection part is provided integrally with the base part of the nozzle part, or has an elastic member connected to the base part,
The elastic member is configured to extend when the air pressure in the air chamber reaches the first pressure;
The nozzle portion has the valve mechanism that maintains a closed state by the elasticity of a spring member, and when the atmospheric pressure in the air chamber reaches the second pressure, the spring member is deformed and gas is discharged from the injection port. The collection device according to claim 6, wherein the collection device is jetted. A plurality of the filters in the housing;
A plurality of the injection units corresponding to each of the filters;
A gas supply device for supplying a gas to each of the plurality of injection units;
The collection device according to any one of claims 1 to 7, wherein a plurality of the injection units are sequentially selected in a predetermined number and gas is supplied from the gas supply device. A casing having a flow of air containing the collection target, a filter for collecting the collection target, a filter part provided with an opening for discharging the flow of air that has passed through the filter, and jetting gas A nozzle portion formed with an injection port, and a collection method by a collection device comprising:
A collection method in which the nozzle portion is moved to a position where it abuts against the opening, and gas is ejected from the nozzle portion in a state where the nozzle portion abuts against the opening. A defibrating unit for defibrating raw materials containing fibers;
A separation unit that separates the defibrated material defibrated by the defibrating unit into a first separated product containing the fibers and a second separated product containing components smaller than the fibers;
A manufacturing unit for manufacturing a recycled material from the first separated product separated by the separating unit;
A collection unit for collecting the second separated product separated by the separation unit,
The collector is
A housing into which an airflow including the second separated substance flows,
A filter portion having a filter for collecting the second separated matter, and provided with an opening for allowing an airflow that has passed through the filter to flow out;
A nozzle portion having an injection port for injecting gas, and an injection portion that moves the nozzle portion to a position in contact with the opening;
The fiber raw material reproduction | regeneration apparatus which injects gas from the said injection port in the state in which the said nozzle part contact | abutted to the said opening.

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